Actually, the nice thing is that Tom's roundup includes other important factors than just simple raw performance. For instance, reading it one can figure out that while Chrome loads pages more quickly, it also loads them less reliably. Likewise, while Chrome performs very well with HTML5, it uses far more memory.

Thankfully it seems that Mozilla isn't just racing to the bottom with these things. They're definitely playing catch-up in some respects, but I get the impression that other browser vendors are obsessing over certain metrics while Mozilla is obsessing over others.

Power usage, for instance. Some vendors have been shouting about how much more power-efficient their browsers are, but does it really matter when I can get to my content twice as fast in Firefox anyway? It would be interesting to see a benchmark that could take the human factor into account..